Any good advice on how to take care of a Parakeet?

Yesterday we found him by our pool, just standing there. We think he was previously owned because his wings have been clipped and all he can do is flutter. We have never had a bird as a pet so we really have no idea what to do. He is our first bird by the way. He doesn’t seem fully grown and hes like a canary yellow color with some white on his chest. We are not sure what species of parakeet he is exactly so we don’t know how best to handle him. Because we found him stray, we are assuming that he flew from his original home or he was released. He’s really skittish if you get to close to him and he is kinda jumppy. Please post some decent advice.
- USAROX